Is Your GM Vehicle Plagued by Electrical Gremlins?
If your 2015 GMC Sierra, Chevy Silverado, or other compatible GM vehicle is experiencing bizarre electrical issues, a failing Body Control Module (BCM) is the most likely culprit. The BCM is the central nervous system for your vehicle’s body electronics, controlling everything from your power windows and locks to your interior lighting and security system. When it starts to fail, it can create a cascade of frustrating and seemingly unrelated problems that can be difficult to diagnose.
From the Diagnostic Bay
We had a 2015 Sierra Denali 3500 come into the shop with a complaint the customer described as ‘haunted’. The dome lights would flicker randomly, the radio would shut off, and the power locks would cycle while driving. The battery was also draining overnight. After checking the battery and alternator, we dove into the network diagnostics. We found multiple communication error codes pointing to the BCM. Instead of a costly and complex replacement at the dealership, we provided the customer with our BCM cloning service. By transferring the data from his original, failing module to a replacement unit, we had him back on the road the next day with a simple plug-and-play install and all electrical issues resolved.
Common Symptoms of a Failing BCM
- ✔ Intermittent or non-working power windows, door locks, or mirrors.
- ✔ Erratic instrument cluster behavior, with gauges dropping out or warning lights flashing.
- ✔ Interior or exterior lights staying on, not turning on, or flickering randomly.
- ✔ The vehicle’s security system malfunctioning or preventing the engine from starting.
- ✔ Radio or infotainment system turning on and off by itself.
- ✔ A persistent parasitic battery drain that kills your battery overnight.
- ✔ Communication errors with other modules when scanned with a diagnostic tool.
Your Plug-and-Play 2015 Sierra BCM Solution
Forget expensive dealership visits that require towing your vehicle and paying for hours of programming labor. Our professional BCM programming service provides you with a fully functional, plug-and-play replacement module. We transfer the critical data—including the VIN, mileage, and specific options—from your original BCM to this replacement unit. This ensures seamless integration with your vehicle’s existing systems without any additional programming required on your end.
How The Process Works:
- ✔ Place Your Order: Complete your purchase through our secure checkout.
- ✔ We’ll Contact You: We will reach out to you with clear, step-by-step instructions and a shipping address to send your original BCM to us.
- ✔ Ship Your Original BCM: Carefully package and ship your original module to our facility.
- ✔ We Program Your Replacement: Upon arrival, our expert technicians will read the data from your original module and write it to the replacement unit. This process typically takes 1-2 business days.
- ✔ Receive Your Plug-and-Play BCM: We ship the programmed replacement BCM back to you. Simply install it, and you’re ready to go!
Important Post-Installation Information
While our goal is a 100% plug-and-play experience, certain vehicle systems may require a simple relearn procedure after the new BCM is installed. These are not signs of a faulty part but are standard security and calibration steps.
- Airbag System Sync: In some cases, the airbag warning light may illuminate after installation. This indicates the new BCM needs to be synced with the SDM (airbag module). A professional scan tool is required to perform the ‘Setup SDM Primary Key in BCM’ procedure to resolve this.
- Brake Pedal Position Relearn: To ensure proper brake light and traction control function, a brake pedal position sensor recalibration might be necessary. This is a simple procedure that can be performed with a compatible diagnostic tool.
Please consult a factory service manual or a qualified technician for vehicle-specific guidance.
Guaranteed Fitment For The Following Vehicles:
This BCM is a direct fit for a wide range of GM cars, trucks, and SUVs. Please verify your part number. This module replaces part numbers: 13594692, 13594768, 13593214, 13580690, 13591519, and 13594769.
- ATS: 2014
- CAPRICE: 2014-2017
- CORVETTE: 2014
- CTS: 2014 (Sdn, VIN A)
- ESCALADE / ESV: 2015
- IMPALA: 2015-2019
- SIERRA / SILVERADO 1500: 2014
- SIERRA / SILVERADO 2500 & 3500: 2015 (ID 13594692)
- SIERRA DENALI 1500: 2014
- SIERRA DENALI 2500 & 3500: 2015 (ID 13594692)
- SUBURBAN 1500: 2015
- TAHOE: 2015
- XTS: 2014
- YUKON / YUKON XL 1500: 2015
Frequently Asked Questions
What is a BCM cloning service?
BCM cloning is a process where we extract the unique, vehicle-specific software and security data from your original Body Control Module and transfer it to a replacement module. This makes the replacement unit an exact digital copy of the original, allowing it to be installed without needing expensive reprogramming from a dealership.
Why do I need to send you my old BCM?
Your original BCM contains the VIN, security information, and programming for all the specific options your vehicle has (like power seats, sunroof, etc.). By sending it to us, we can ensure all this data is perfectly transferred, making the replacement 100% plug-and-play.
What if my original BCM is completely dead or unreadable?
In most cases, even if the BCM has failed, we can still extract the necessary data. If your module is severely damaged (e.g., by fire or water) and the data is unrecoverable, we will contact you to discuss alternative solutions.
Is this a difficult part to install?
The BCM is typically located under the steering column or behind the driver’s side kick panel. Installation is usually straightforward, involving disconnecting the battery, removing a few trim panels, and unplugging the electrical connectors. However, if you are not comfortable with automotive electrical work, we recommend professional installation.
Do I need to do anything after I install the new BCM?
Our service makes the module plug-and-play, so no programming is needed. However, as mentioned above, some vehicles may require an airbag system sync or a brake pedal position relearn procedure, which requires a professional scan tool.